| Starch Modification by Graft Copolymerization of Acrylonitrile |
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| 作者姓名： | 刘瑞贤 李莉 茹宗玲 张黎明 高建平 田汝川 |
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| 作者单位： | School of Sciences，School of Sciences，Department of Chemical Engineering，School of Sciences，School of Sciences，School of Sciences Tianjin University，Tianjin 300072，China，Tianjin University，Tianjin 300072，China，Anyang University，Anyang 455000，China，Tianjin University，Tianjin 300072，China，Tianjin University，Tianjin 300072，China，Tianjin University，Tianjin 300072，China |
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| 摘 要： | Starch(St)isoneofthemostplentifulrenewablenatu ralresources .Ithasbeenwidelyappliedinthepaper,textileandfoodindustriesetc1] .Asitisbiodegradableintheenvi ronment,starchcanbeaddedtosyntheticplasticstoreducethe“whitepollution”2 ] ,orusedaspolyamideintheoilfield3] .Sincethecompatibilityofstarchwithsyntheticplas tics,processingpropertyandmechanicalpropertiesarenotgoodenough ,chemicalorphysicalmodificationisobviouslynecessary . Graftcopolymerizationisoneoftheeffectivewaystoim provethecompr…
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Starch Modification by Graft Copolymerization of Acrylonitrile |
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| LIU Rui-xian,LI Li,RU Zong-ling,ZHANG Li-ming,GAO Jian-ping,TIAN Ru-chuan.Starch Modification by Graft Copolymerization of Acrylonitrile[J].Transactions of Tianjin University,2003,9(3). |
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| Authors: | LIU Rui-xian LI Li RU Zong-ling ZHANG Li-ming GAO Jian-ping TIAN Ru-chuan |
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| Institution: | 1. School of Sciences, Tianjin University, Tianjin 300072, China
2. Department of Chemical Engineering, Anyang University, Anyang 455000, China |
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| Abstract: | The graft copolymerization of acrylonitrile (AN) onto starch under the initiation of potassium permanganate was investigated. The effect of various reaction conditions on the graft copolymerization was studied. The relationships between the grafting rate and the initiator concentration of potassium permanganate, monomer acrylonitrile and backbone starch, as well as reaction temperature were established. The oxidation reaction of starch with manganic ions and valence changes of manganic ions during the graft copolymerization were discussed. The results show that manganic ion Mn7+ underwent a series of valence changes during the graft copolymerization: Mn(Ⅶ) → Mn(Ⅳ) → Mn(Ⅲ) → Mn(Ⅱ). The grafting rate of the graft copolymerization of acrylonitrile onto starch is also given. |
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| Keywords: | starch acrylonitrile graft copolymerization |
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